贵州遵义黔XY 1井龙马溪组页岩孔隙特征及主控因素
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摘要
以贵州省遵义市黔XY 1井龙马溪组1 029.91～1 140.4 m深度范围的22个完整的全井段取心页岩样品作为研究对象,将场发射扫描电镜及PerGeos数字岩心分析系统联用,借助有机质含量及成熟度、矿物成分能谱分析测试数据,对其孔隙发育特征及主控因素进行定性及定量分析。黔XY 1井龙马溪组页岩有机质丰度较高,处于高—过成熟阶段,主要发育无机矿物孔、有机质孔及微裂缝3类孔隙,其中无机矿物孔包括粒间、粒内、晶间、铸模及溶蚀孔,微裂缝包括构造微裂缝、成岩收缩缝、有机质生排烃缝及人为裂缝。影响页岩孔隙发育的主控因素为有机质含量、有机质热演化程度及埋藏深度。
Twenty-two intact shale core samples from 1 029.91-1 140.4 m in the well Qian XY 1 in the Zunyi City of the Guizhou Province were studied using FE-SEM combined with PerGeos. Qualitative and quantitative analyses of pore development characteristics and main controlling factors were identified based on the organic matter content and maturity, as well as the energy spectrum data of mineral components. The Longmaxi Formation shale in the well Qian XY 1 has a high organic matter abundance and is highly mature to over mature. It mainly developed three types of pores: inorganic mineral pores, organic pores and micro-cracks. The inorganic mineral pores include intragranular, intergranular, intracrystalline, mold and dissolution pores, while the micro-cracks include structural micro-cracks, diagenetic shrinkage joints, organic matter hydrocarbon-discharge joints and artificial cracks. The main controlling factors affecting shale pore development are organic matter content, thermal evolution of organic matter and burial depth.
Twenty-two intact shale core samples from 1 029.91-1 140.4 m in the well Qian XY 1 in the Zunyi City of the Guizhou Province were studied using FE-SEM combined with PerGeos. Qualitative and quantitative analyses of pore development characteristics and main controlling factors were identified based on the organic matter content and maturity, as well as the energy spectrum data of mineral components. The Longmaxi Formation shale in the well Qian XY 1 has a high organic matter abundance and is highly mature to over mature. It mainly developed three types of pores: inorganic mineral pores, organic pores and micro-cracks. The inorganic mineral pores include intragranular, intergranular, intracrystalline, mold and dissolution pores, while the micro-cracks include structural micro-cracks, diagenetic shrinkage joints, organic matter hydrocarbon-discharge joints and artificial cracks. The main controlling factors affecting shale pore development are organic matter content, thermal evolution of organic matter and burial depth.
引文
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[18] 张培先.黔中隆起及邻区下寒武统页岩气成藏特殊性分析[J].石油实验地质,2017,39(2):162-168. ZHANG Peixian.Peculiar accumulation conditions for shale gas in the Lower Cambrian in Qianzhong uplift and its periphery[J].Petroleum Geology & Experiment,2017,39(2):162-168.
[19] 张鹏,张金川,刘鸿,等.贵州下志留统龙马溪组页岩气成藏条件分析[J].中南大学学报(自然科学版),2016,47(9):3085-3092. ZHANG Peng,ZHANG Jinchuan,LIU Hong,et al.Accumulation conditions of shale gas from Lower Silurian Longmaxi Formation in Guizhou[J].Journal of Central South University (Science and Technology),2016,47(9):3085-3092.
[20] 吴纪修,王志刚,辛云路,等.南方地区页岩气基础地质调查黔绥地1井钻井工艺及完井地质[J].探矿工程(岩土钻掘工程),2018,45(2):12-17. WU Jixiu,WANG Zhigang,XIN Yunlu,et al.Drilling technology of Qiansuidi well-1 for basic geological survey of shale gas in the southern area of Guizhou Province and completion geologic[J].Exploration Engineering (Rock & Soil Drilling and Tunneling),2018,45(2):12-17.
[21] 李田田,李振宇,钱鹏杰.贵州绥阳地区下志留统龙马溪组页岩气地质条件[J].科技创新与应用,2016(24):182. Li Tiantian,LI Zhenyu,QIAN Pengjie.Shale gas geological conditions of the Lower Silurian Longmaxi Formation in Suiyang area,Guizhou Province[J].Technology Innovation and Application,2016(24):182.
[22] 李钜源.渤海湾盆地东营凹陷古近系泥页岩孔隙特征及孔隙度演化规律[J].石油实验地质,2015,7(5):566-574. LI Juyuan.Pore characteristics and their evolution in Paleogene mud shales,Dongying Sag,Bohai Bay Basin[J].Petroleum Geology & Experiment,2015,37(5):566-574.
[23] 唐相路,姜振学,李卓,等.渝东南地区龙马溪组高演化页岩微纳米孔隙非均质性及主控因素[J].现代地质,2016,30(1):164-171. TANG Xianglu,JIANG Zhenxue,LI Zhuo,et al.Micro/nano pore heterogeneity and main controlling factors of the high-maturity Longmaxi Formation shale in southeastern Chongqing[J].Geoscience,2016,30(1):164-171.
[24] 龙鹏宇,张金川,姜文利,等.渝页1井储层孔隙发育特征及其影响因素分析[J].中南大学学报(自然科学版),2012,43(10):3954-3963. LONG Pengyu,ZHANG Jinchuan,JIANG Wenli,et al.Analysis on pores forming features and its influence factors of reservoir well Yuye-1[J].Journal of Central South University (Science and Technology),2012,43(10):3954-3963.
[25] 于炳松.富有机质页岩沉积环境与成岩作用[M].上海:华东理工大学出版社,2016. YU Bingsong.Sedimentary environment and diagenesis of organic rich shale[M].Shanghai:East China University of Science and Technology Press,2016.
[26] 陈发景,田世澄.压实与油气运移[M].武汉:中国地质大学出版社,1989:113-134. CHEN Fajing,TIAN Shicheng.Compaction and hydrocarbon migration[M].Wuhan:China University of Geosciences Press,1989:113-134. (编辑
[2] JARVIE D M,HILL R J,RUBLE T E,et al.Unconventional shale-gas systems:the Mississippian Barnett shale of north-central Texas as one model for thermogenic shale-gas assessment[J].AAPG Bulletin,2007,91(4):475-499.
[3] LOUCKS R G,REED R M,RUPPEL S C,et al.Spectrum of pore types and networks in mudrocks and a descriptive classification for matrix-related mudrock pores[J].AAPG Bulletin,2012,96(6):1071-1078.
[4] SCHIEBER J.Common themes in the formation and preservation of intrinsic porosity in shales and mudstones-illustrated with examples across the Phanerozoic[C]//SPE Unconventional Gas Conference.Pittsburgh,Pennsylvania,USA:Society of Petroleum Engineers,2010.
[5] SISK C,DIAZ D,WALLS A,et al.3-D visualization and classification of pore structure and pore filling in gas shales[C]//SPE Annual Technical Conference and Exhibition.Florence,Italy:Society of Petroleum Engineers,2010.
[6] 葛岩,谢英刚,胡云亭,等.澳大利亚E盆地Toolebuc组页岩微观孔隙结构特征[J].天然气地球科学,2015,26(5):979-985. GE Yan,XIE Yinggang,HU Yunting,et al.Characterization of microscopic pore structures in shale reservoirs of Toolebuc Formation in the E Basin,Australia[J].Natural Gas Geoscience,2015,26(5):979-985.
[7] 杨超,张金川,李婉君,等.辽河坳陷沙三、沙四段泥页岩微观孔隙特征及其成藏意义[J].石油与天然气地质,2014,35(2):286-294. YANG Chao,ZHANG Jinchuan,LI Wanjun,et al.Microscopic pore characteristics of Sha-3 and Sha-4 shale and their accumulation significance in Liaohe Depression[J].Oil & Gas Geology,2014,35(2):286-294.
[8] 单中强,王馨,王庆之,等.川东南地区志留系龙马溪组页岩微观孔隙结构特征[J].地质学刊,2015,39(4):552-555. SHAN Zhongqiang,WANG Xin,WANG Qingzhi.Micropore structure characteristics of the Silurian Longmaxi Formation shale in southeast Sichuan Province[J].Journal of Geoology,2015,39(4):552-555.
[9] 狄可可.富有机质页岩微观孔隙结构特征扫描电镜研究[J].中州煤炭,2015(3):116-119. DI Keke.Scanning electron microscopy analysis on micropore structure characteristics in organic-rich shale[J].Zhongzhou Coal,2015(3):116-119.
[10] 伍岳,樊太亮,蒋恕,等.海相页岩储层微观孔隙体系表征技术及分类方案[J].地质科技情报,2014,33(4):91-97. WU Yue,FAN Tailiang,JIANG Shu,et al.Characterizing techniques and classification methods for microscope pore system in marine shale reservoir[J].Geological Science and Technology Information,2014,33(4):91-97.
[11] 杨文新,李继庆,赵江艳,等.四川盆地涪陵地区龙马溪组页岩微观孔隙结构定性定量研究[J].石油实验地质,2018,40(1):97-102. YANG Wenxin,LI Jiqing,ZHAO Jiangyan,et al.Qualitative and quantitative study of micro-pore structures of Longmaxi Formation shale in Fulingarea,Sichuan Basin[J].Petroleum Geology & Experiment,2018,40(1):97-102.
[12] 王濡岳,尹帅,龚大建,等.下寒武统页岩孔隙结构与分形特征[J].断块油气田,2018,25(5):589-592. WANG Ruyue,YIN Shuai,GONG Dajian,et al.Pore structure and fractal characteristics of Lower Cambrian shales[J].Fault-Block Oil and Gas Field,2018,25(5):589-592.
[13] 李海,刘安,罗胜元,等.鄂西宜昌地区寒武系页岩孔隙结构特征及发育主控因素[J].油气地质与采收率,2018,25(6):16-23. LI Hai,LIU An,LUO Shengyuan,et al.Pore structure characte-ristics and development control factors of Cambrian shale in the Yichang area,western Hubei[J].Petroleum Geology and Recovery Efficiency,2018,25(6):16-23.
[14] 朱汉卿,贾爱林,位云生,等.低温氩气吸附实验在页岩储层微观孔隙结构表征中的应用[J].石油实验地质,2018,40(4):559-565. ZHU Hanqing,JIA Ailin,WEI Yunsheng,et al.Microscopic pore structure characteristics of shale reservoir based on low-temperature argon adsorption experiments[J].Petroleum Geology & Experiment,2018,40(4):559-565.
[15] 朱汉卿,贾爱林,位云生,等.昭通示范区龙马溪组页岩微观孔隙结构特征及吸附能力[J].油气地质与采收率,2018,25(4):1-6. ZHU Hanqing,JIA Ailin,WEI Yunsheng,et al.Characteristics of microscopic pore structure and methane adsorption capacity of shale in the Longmaxi Formation in the Zhaotong area[J].Petroleum Geology and Recovery Efficiency,2018,25(4):1-6.
[16] 刘尧文,王进,张梦吟,等.四川盆地涪陵地区五峰—龙马溪组页岩气层孔隙特征及对开发的启示[J].石油实验地质,2018,40(1):44-50. LIU Yaowen,WANG Jin,ZHANG Mengyin,et al.Pore features of shale gas layer in Wufeng-Longmaxi formations in Fuling area of Sichuan Basin and the application to development[J].Petroleum Geology & Experiment,2018,40(1):44-50.
[17] 熊健,刘向君,梁利喜.四川盆地富有机质页岩孔隙分形特征[J].断块油气田,2017,24(2):184-189. XIONG Jian,LIU Xiangjun,LIANG Lixi.Fractal characteristics of organic rich shale pore in Sichuan Basin, China[J].Fault-Block Oil and Gas Field,2017,24(2):184-189.
[18] 张培先.黔中隆起及邻区下寒武统页岩气成藏特殊性分析[J].石油实验地质,2017,39(2):162-168. ZHANG Peixian.Peculiar accumulation conditions for shale gas in the Lower Cambrian in Qianzhong uplift and its periphery[J].Petroleum Geology & Experiment,2017,39(2):162-168.
[19] 张鹏,张金川,刘鸿,等.贵州下志留统龙马溪组页岩气成藏条件分析[J].中南大学学报(自然科学版),2016,47(9):3085-3092. ZHANG Peng,ZHANG Jinchuan,LIU Hong,et al.Accumulation conditions of shale gas from Lower Silurian Longmaxi Formation in Guizhou[J].Journal of Central South University (Science and Technology),2016,47(9):3085-3092.
[20] 吴纪修,王志刚,辛云路,等.南方地区页岩气基础地质调查黔绥地1井钻井工艺及完井地质[J].探矿工程(岩土钻掘工程),2018,45(2):12-17. WU Jixiu,WANG Zhigang,XIN Yunlu,et al.Drilling technology of Qiansuidi well-1 for basic geological survey of shale gas in the southern area of Guizhou Province and completion geologic[J].Exploration Engineering (Rock & Soil Drilling and Tunneling),2018,45(2):12-17.
[21] 李田田,李振宇,钱鹏杰.贵州绥阳地区下志留统龙马溪组页岩气地质条件[J].科技创新与应用,2016(24):182. Li Tiantian,LI Zhenyu,QIAN Pengjie.Shale gas geological conditions of the Lower Silurian Longmaxi Formation in Suiyang area,Guizhou Province[J].Technology Innovation and Application,2016(24):182.
[22] 李钜源.渤海湾盆地东营凹陷古近系泥页岩孔隙特征及孔隙度演化规律[J].石油实验地质,2015,7(5):566-574. LI Juyuan.Pore characteristics and their evolution in Paleogene mud shales,Dongying Sag,Bohai Bay Basin[J].Petroleum Geology & Experiment,2015,37(5):566-574.
[23] 唐相路,姜振学,李卓,等.渝东南地区龙马溪组高演化页岩微纳米孔隙非均质性及主控因素[J].现代地质,2016,30(1):164-171. TANG Xianglu,JIANG Zhenxue,LI Zhuo,et al.Micro/nano pore heterogeneity and main controlling factors of the high-maturity Longmaxi Formation shale in southeastern Chongqing[J].Geoscience,2016,30(1):164-171.
[24] 龙鹏宇,张金川,姜文利,等.渝页1井储层孔隙发育特征及其影响因素分析[J].中南大学学报(自然科学版),2012,43(10):3954-3963. LONG Pengyu,ZHANG Jinchuan,JIANG Wenli,et al.Analysis on pores forming features and its influence factors of reservoir well Yuye-1[J].Journal of Central South University (Science and Technology),2012,43(10):3954-3963.
[25] 于炳松.富有机质页岩沉积环境与成岩作用[M].上海:华东理工大学出版社,2016. YU Bingsong.Sedimentary environment and diagenesis of organic rich shale[M].Shanghai:East China University of Science and Technology Press,2016.
[26] 陈发景,田世澄.压实与油气运移[M].武汉:中国地质大学出版社,1989:113-134. CHEN Fajing,TIAN Shicheng.Compaction and hydrocarbon migration[M].Wuhan:China University of Geosciences Press,1989:113-134. (编辑